Cathodic Protection Interference

Hi all. Last week at the AMPP conference, someone mentioned to me that a standard exists that offers criteria for stray current testing (ISO 21857). I just purchased the standard and haven't read through all of it just yet, but I see some promise in its applicability when turning on a new CP system in an area where other utilities may be present (water mains, etc). 

I was wondering if anyone else in this group had used this standard or had any thoughts on its content, or if anyone was aware of an AMPP document that was similar in scope to this standard. I had been looking for something like this in the AMPP space for some time and hope that one day AMPP could put together a consensus document with similar guidance / criteria.